INVESTIGADORES
PERILLO Gerardo Miguel E.
artículos
Título:
Principal component analysis applied to geomorphologic evolution
Autor/es:
CUADRADO, DIANA G; PERILLO, GERARDO M. E.
Revista:
Estuarine Coastal and Shelf Science
Editorial:
Academic Press
Referencias:
Lugar: Londres; Año: 1997 vol. 44 p. 411 - 419
ISSN:
0272-7714
Resumen:
The study area comprises a sector of the main channel of the entrance to Bahia Blanca system harbour. E1Toro channel,characterized by recurrent accumulation processes, had to be dredged periodically to maintain the nominal depth of10m. Detailed surveys of the reach are made regularly to check the navigation conditions. A set of survey charts madewithin two dredging operations and covering about 1 year was analysed by means of principal component analysis (PCA).The first principal component obtained from PCA describes the mean depth of the area, while the second principalcomponent explains the morphological variations over time. From it, the accumulation periodicity can be detected, and,therefore, when dredging becomes necessary. Based on dynamics studies, a large transverse flood current component isobserved which is attributed to a postulated helicoidal flow pattern responsible for the large sediment accumulationobserved in the south-east of the El Toro channel.